16. What does the speaker say some customers do when they arrive at the check-out counter?
举一反三
- If you arrive by train, what do you need to do when you come out of the station?
- What did the instructor do when he found out about the speaker's problem?
- Speaker a: What does your mother do?? Speaker b: _______
- On the average, 1.8 customers per minute arrive at any one of the checkout counters of a grocery store. What type of probability distribution can be used to find out the probability that there will be no customer arriving at a checkout counter?
- What does the speaker say about learning to swim in the Navy?